CN113375047A - Hydrogen station with double compression systems operating and operation method thereof - Google Patents

Hydrogen station with double compression systems operating and operation method thereof Download PDF

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Publication number
CN113375047A
CN113375047A CN202110918749.4A CN202110918749A CN113375047A CN 113375047 A CN113375047 A CN 113375047A CN 202110918749 A CN202110918749 A CN 202110918749A CN 113375047 A CN113375047 A CN 113375047A
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China
Prior art keywords
valve
storage tank
compressor
pressure
pipeline
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Granted
Application number
CN202110918749.4A
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Chinese (zh)
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CN113375047B (en
Inventor
方沛军
姜方
宣锋
肖成义
伍远安
曹俊
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Shanghai Hyfun Energy Technology Co Ltd
Original Assignee
Henan Hifeng Energy Technology Co ltd
Shanghai Hyfun Energy Technology Co Ltd
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Priority to CN202110918749.4A priority Critical patent/CN113375047B/en
Publication of CN113375047A publication Critical patent/CN113375047A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/02—Pipe-line systems for gases or vapours
    • F17D1/065—Arrangements for producing propulsion of gases or vapours
    • F17D1/07—Arrangements for producing propulsion of gases or vapours by compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0157—Compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/01—Intermediate tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F17C2250/0434—Pressure difference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/07—Actions triggered by measured parameters
    • F17C2250/072—Action when predefined value is reached
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/02—Improving properties related to fluid or fluid transfer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/34—Hydrogen distribution

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses a hydrogen station with a double compression system and an operation method thereof. The hydrogen station comprises a first compressor, a second compressor, a first storage tank, a second storage tank and a third storage tank; the first pipeline is provided with a first valve and a first pressure sensor; a second valve is arranged on the second pipeline; a third valve is arranged on the third pipeline; a fourth valve is arranged on the fourth pipeline; a fifth valve is arranged on the fifth pipeline; a sixth valve is arranged on the sixth pipeline; a seventh valve is arranged on the seventh pipeline; an eighth valve is arranged on the eighth pipeline; a ninth valve is arranged on the ninth pipeline; a tenth valve is arranged on the tenth pipeline; a second pressure sensor is arranged on the first storage tank, a third pressure sensor is arranged on the second storage tank, and a fourth pressure sensor is arranged on the third storage tank; and a fifth pressure sensor is arranged on the inflation tube. The invention reduces the pressure span of the compressor, reduces the supercharging pressure difference, simultaneously reduces the pressure range of the inlet and the outlet correspondingly, and operates in a relatively stable working condition for more time.

Description

Hydrogen station with double compression systems operating and operation method thereof
Technical Field
The invention relates to the technical field of hydrogen stations, in particular to a hydrogen station with a double compression system and an operation method thereof.
Background
Most of the currently operated hydrogenation stations adopt outsourcing hydrogen and high-pressure tube bundle vehicle hydrogen transportation modes, the average transportation radius is 200 kilometers, the pressure before use is about 18MPa, the pressure after use is about 6MPa, the residual gas volume of about 30 percent cannot be used and is pulled back, the use efficiency is low, and the energy consumption and other costs are increased. In a general hydrogen station operation mode, a hydrogenation vehicle is filled to 35MPa from the initial pressure of about 3MPa, the pressure span is large, a single compressor is used for operating and pressurizing, the working condition is continuously changed along with the continuous increase of the pressure difference, the load of the compressor is also continuously changed, the high-speed operation at the initial stage and the low-speed operation at the full load at the later stage are shown, the long-term operation affects the service life of key equipment and parts, and the unstable factors are increased.
Disclosure of Invention
The present invention is directed to a hydrogen station and a method for operating the same, in which a dual compression system operates to reduce a pressure span of operation of a compressor and a pressure difference of pressurization, in order to overcome the above-mentioned disadvantages of the prior art.
The hydrogen station with the double compression systems operating comprises a first compressor, a second compressor, a first storage tank, a second storage tank and a third storage tank, wherein the minimum set pressure value of the third storage tank is not less than the maximum set pressure of the second storage tank, and the minimum set pressure value of the second storage tank is not less than the maximum set pressure of the first storage tank;
the tube bundle vehicle is communicated with the air inlet end of the first compressor through a first pipeline, and a first valve and a first pressure sensor are arranged on the first pipeline;
the first storage tank is communicated with the air inlet end of the first compressor through a second pipeline, and a second valve is arranged on the second pipeline;
the first storage tank is communicated with the air outlet end of the first compressor through a third pipeline, and a third valve is arranged on the third pipeline;
the second storage tank is communicated with the air outlet end of the first compressor through a fourth pipeline, and a fourth valve is arranged on the fourth pipeline;
the second storage tank is communicated with the air inlet end of the second compressor through a fifth pipeline, and the fifth pipeline is provided with a fifth valve;
the second storage tank is communicated with equipment to be hydrogenated through a sixth pipeline, and a sixth valve is arranged on the sixth pipeline;
the third storage tank is communicated with the air inlet end of the second compressor through a seventh pipeline, and a seventh valve is arranged on the seventh pipeline;
the third storage tank is communicated with the air outlet end of the second compressor through an eighth pipeline, and an eighth valve is arranged on the eighth pipeline;
the third storage tank is communicated with the equipment to be hydrogenated through a ninth pipeline, and a ninth valve is arranged on the ninth pipeline;
the equipment to be hydrogenated is communicated with the gas outlet end of the second compressor through a tenth pipeline, and a tenth valve is arranged on the tenth pipeline;
a second pressure sensor is arranged on the first storage tank, a third pressure sensor is arranged on the second storage tank, and a fourth pressure sensor is arranged on the third storage tank;
the gas outlet ends of the sixth pipeline, the ninth pipeline and the tenth pipeline are all connected in parallel at the gas inlet end of a gas filling pipe, the gas outlet end of the gas filling pipe is detachably communicated with the equipment to be hydrogenated, and a fifth pressure sensor is arranged on the gas filling pipe.
Further, the hydrogen station further comprises a controller, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve, the eighth valve, the ninth valve and the tenth valve are all electromagnetic valves, and the controller is electrically connected with the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve, the eighth valve, the ninth valve, the tenth valve, the first pressure sensor, the second pressure sensor, the third pressure sensor, the fourth pressure sensor, the fifth pressure sensor, the first compressor and the second compressor.
Further, the pressure of the tube bundle vehicle before hydrogen transportation and hydrogen unloading is 17-19Mpa, the set pressure range of the first storage tank is 1-8Mpa, the set pressure range of the second storage tank is 8-20Mpa, and the set pressure range of the third storage tank is 20-45 Mpa.
In the operation method of the hydrogen station operated by the double-compression system, the detected pressures of the first pressure sensor, the second pressure sensor, the third pressure sensor, the fourth pressure sensor and the fifth pressure sensor are respectively marked as P0，P1，P2、P3And P4；
The gas storage processes of the first storage tank, the second storage tank and the third storage tank are as follows:
firstly opening the first valve and the fourth valve, operating the first compressor, transferring and pressurizing hydrogen in the tube bundle vehicle to the second storage tank, then opening the eighth valve and the fifth valve, operating the second compressor, transferring and pressurizing hydrogen in the second storage tank to the third storage tank, and when P is reached3When the maximum preset pressure value of the third storage tank is reached, stopping operating the second compressor, and closing the eighth valve and the fifth valve;
when P is present2The maximum set pressure value of the second storage tank is reached,P0when the pressure value is not less than the minimum set pressure value of the second storage tank, stopping running the first compressor, and closing the first valve and the fourth valve;
when P is present2Reaching the maximum set pressure value, P, of the second tank0When the pressure value is less than the minimum set pressure value of the second storage tank, the fourth valve is closed, the third valve is opened, the first compressor continues to operate, hydrogen in the tube bundle vehicle is transferred and pressurized to the first storage tank, and when the pressure value is P1And when the maximum preset pressure value of the first tank body is reached, stopping running the first compressor.
Further, the hydrogenation flow of the equipment to be hydrogenated is as follows: the required pressure of the equipment to be hydrogenated is recorded as P, and the pressure P detected by the fifth pressure sensor4The pressure inside the equipment to be hydrogenated is the pressure inside the equipment to be hydrogenated;
(1) when P < P2
The initial pressure in the apparatus to be hydrogenated is less than P2When the difference is more than 2MPa, the fifth valve and the sixth valve are opened, the equipment to be hydrogenated is hydrogenated by the second storage tank, and P is monitored2And P4When the difference is less than or equal to 2MPa, closing the fifth valve and the sixth valve, simultaneously opening the ninth valve, and filling the equipment to be hydrogenated by the third storage tank; p4When the required pressure P of the equipment to be hydrogenated is reached, the ninth valve is closed, and the hydrogenation is finished;
(2) when P is present3≥P≥P2And P is3The difference value of the pressure difference value and the P is more than or equal to 2MPa
(2.1) the initial pressure of the apparatus to be hydrogenated is less than P2When the difference is more than 2MPa, the operation process is the same as that of the step (1);
(2.2) the initial pressure of the apparatus to be hydrogenated is greater than P2When the hydrogenation equipment is used, the ninth valve is opened, and the equipment to be hydrogenated is filled from the third storage tank; p4When the required pressure P of the equipment to be hydrogenated is reached, the ninth valve is closed, and the hydrogenation is finished;
(3) when P is present3≥P≥P2And P is3The difference value with P is less than 2MPa
(3.1) the initial pressure of the apparatus to be hydrogenated is less than P2When the difference is more than 2MPa, the fifth valve and the sixth valve are opened, and the second storage tank hydrogenates the equipment to be hydrogenatedMeasuring P2And P4When the difference is less than or equal to 2MPa, closing the fifth valve and the sixth valve, simultaneously opening the ninth valve, filling the equipment to be hydrogenated by the third storage tank, and monitoring P3And P4When the difference value is less than or equal to 2MPa, closing the ninth valve, opening the seventh valve, the second compressor and the tenth valve, filling the equipment to be hydrogenated by the third storage tank through the second compressor, and closing the seventh valve and the tenth valve when the fifth pressure sensor monitors that the required pressure P is reached, so that the hydrogenation is finished;
(3.2) the initial pressure of the apparatus to be hydrogenated is greater than P2When the ninth valve is opened, the equipment to be hydrogenated is filled by the third storage tank, P4When the required pressure P of the equipment to be hydrogenated is reached, the ninth valve is closed, and the hydrogenation is finished; upon detection of P3And P4When the difference value is less than or equal to 2MPa, closing the ninth valve, opening the seventh valve, the second compressor and the tenth valve, filling the equipment to be hydrogenated by the third storage tank through the second compressor, and closing the seventh valve and the tenth valve when the fifth pressure sensor monitors that the required pressure P is reached, so that the hydrogenation is finished;
in the two cases, the eighth valve and the fifth valve are opened at the same time when the hydrogenation is finished, the second compressor continues to work, the hydrogen in the second storage tank is pressurized and filled into the third storage tank, and when the third storage tank reaches the maximum preset pressure value or the second storage tank reaches the minimum preset pressure value, the second compressor stops working;
(4) when P is more than or equal to P3
(4.1) the initial pressure in the apparatus to be hydrogenated is less than P2The operation flow is the same as that of (3.1);
(4.2) initial pressure in the apparatus to be hydrogenated is greater than P2Is not more than P3Meanwhile, the operation flow is the same as that in (3.2);
(4.3) initial pressure in the apparatus to be hydrogenated is greater than P3When the pressure reaches the required pressure P, the seventh valve and the tenth valve are closed, and the hydrogenation is finished;
in the three cases, the eighth valve and the fifth valve are opened at the same time when the hydrogenation is finished, the second compressor continues to work, the hydrogen in the second storage tank is pressurized and filled into the third storage tank, and when the third storage tank reaches the maximum preset pressure value or the second storage tank reaches the minimum preset pressure value, the second compressor stops working.
Further, after hydrogenation is carried out on the equipment to be hydrogenated, the hydrogen in the second storage tank is smaller than the minimum set pressure value;
the hydrogen gas balance is also arranged in the tube bundle vehicle, and P0When the pressure value is larger than the minimum set pressure value of the second storage tank, the first valve and the fourth valve are opened, and the first compressor is operated to take gas from the pipe bundle vehicle and pressurize the second storage tank;
without hydrogen balance, or P, in the tube bundle vehicle0Not more than the minimum set pressure value of the second storage tank, opening the second valve, the first compressor and the fourth valve, pressurizing and filling hydrogen in the first storage tank to the second storage tank by the first compressor, and monitoring P2Reaching a maximum predetermined pressure value of the second tank, or monitoring P1And stopping the operation of the first compressor when the minimum preset pressure value of the first storage tank is reached.
The invention is suitable for different pressure difference scenes, selects a first compression pump and a second compression pump with different power models, stores the compressed gas in a large storage device in a way of pressurizing in a large volume in a gas transfer scene, has small initial pressure difference or small inherent pressure difference in an operation occasion, and has little difference in compression speed, the gas treatment capacity under a single compression stroke is more concerned for the compression pump with small compression ratio and large single treatment capacity, the efficiency is higher when the compression pump or the compression pump combination with small compression ratio and large single treatment capacity is selected, the primary pressure boosting of the gas is preferentially achieved, and the purpose of treating a large amount of gas is achieved, so that a first valve, a first compressor and a fourth valve are firstly opened to charge a second storage tank, the first compressor finishes the large amount of gas transfer and the primary pressure boosting, then the second compressor and an eighth valve can be opened, the gas in the second storage tank is pressurized to a third storage tank through the second compressor, and 1 or more pipe bundle vehicles which are not used up under 6MPa remain, before pulling away, open the third valve, transfer surplus gas from the tube bank car to the station in vacant or the first storage tank of low pressure through first compressor, this transfer process, the gas handling capacity is big, and the pressure differential is little, correspond to the first compressor who chooses the big gas handling capacity of single time for use, take out the pressure of instilling the car to 1MPa or to relevant regulation requirement, pull back the empty car again, the pressure span of first compressor and second compressor work has been dwindled like this, the pressure boost differential has been dwindled, the import and export pressure scope also correspondingly dwindles simultaneously, more time operation is in the operating mode of relatively stable, more be favorable to equipment extension life, reduce the fault maintenance, reduce cost.
When the equipment to be inflated is inflated with hydrogen, a proper inflation way is selected according to the required pressure of the equipment to be inflated, the working pressure span of the second compressor is reduced, the supercharging pressure difference is reduced, the pressure range of an inlet and an outlet is correspondingly reduced, the equipment can operate under a relatively stable working condition for more time, the service life of the equipment is prolonged, the fault maintenance is reduced, and the cost is reduced.
Drawings
Fig. 1 is a schematic diagram of the structure of a hydrogen station in which a dual compression system of the present invention operates.
100. A first compressor; 200. a second compressor; 300. a first storage tank; 310. a second pressure sensor; 400. a second storage tank; 410. a third pressure sensor; 500. a third storage tank; 510. a fourth pressure sensor; 600. a pipe bundle vehicle; 700. equipment to be hydrogenated; 800. an inflation tube; 810-a fifth pressure sensor; 900. a controller; 1. a first pipeline; 11. a first valve; 12. a first pressure sensor; 2. a second pipeline; 21. a second valve; 3. a third pipeline; 31. a third valve; 4. a fourth pipeline; 41. a fourth valve; 5. a fifth pipeline; 51. a fifth valve; 6. a sixth pipeline; 61. a sixth valve; 7. a seventh pipeline; 71. a seventh valve; 8. an eighth pipeline; 81. an eighth valve; 9. a ninth conduit; 91. a ninth valve; 10. a tenth pipeline; 101. a tenth valve.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, a hydrogen station with a dual compression system operating according to the present invention includes a first compressor 100, a second compressor 200, a first storage tank 300, a second storage tank 400, and a third storage tank 500, wherein a minimum set pressure value of the third storage tank 500 is not less than a maximum set pressure of the second storage tank 400, and a minimum set pressure value of the second storage tank 400 is not less than a maximum set pressure of the first storage tank 300;
the tube bundle vehicle 600 is communicated with the air inlet end of the first compressor 100 through a first pipeline 1, and a first valve 11 and a first pressure sensor 12 are arranged on the first pipeline 1;
the first storage tank 300 is communicated with the air inlet end of the first compressor 100 through a second pipeline 2, and a second valve 21 is arranged on the second pipeline 2;
the first storage tank 300 is communicated with the air outlet end of the first compressor 100 through a third pipeline 3, and a third valve 31 is arranged on the third pipeline 3;
the second storage tank 400 is communicated with the air outlet end of the first compressor 100 through a fourth pipeline 4, and a fourth valve 41 is arranged on the fourth pipeline 4;
the second storage tank 400 is communicated with the air inlet end of the second compressor 200 through a fifth pipeline 5, and the fifth pipeline 5 is provided with a fifth valve 51;
the second storage tank 400 is communicated with the equipment 700 to be hydrogenated through a sixth pipeline 6, and a sixth valve 61 is arranged on the sixth pipeline 6;
the third storage tank 500 is communicated with the air inlet end of the second compressor 200 through a seventh pipeline 7, and a seventh valve 71 is arranged on the seventh pipeline 7;
the third storage tank 500 is communicated with the air outlet end of the second compressor through an eighth pipeline 8, and an eighth valve 81 is arranged on the eighth pipeline 8;
the third storage tank 500 is communicated with the equipment 700 to be hydrogenated through a ninth pipeline 9, and a ninth valve 91 is arranged on the ninth pipeline 9;
the device 700 to be hydrogenated is communicated with the gas outlet end of the second compressor 200 through a tenth pipeline 10, and a tenth valve 101 is arranged on the tenth pipeline 10;
the first storage tank 300 is provided with a second pressure sensor 310, the second storage tank 400 is provided with a third pressure sensor 410, and the third storage tank 500 is provided with a fourth pressure sensor 510;
the air outlet ends of the sixth pipeline 6, the ninth pipeline 9 and the tenth pipeline 10 are all connected in parallel at the air inlet end of the gas filling pipe 800, the air outlet end of the gas filling pipe 800 is detachably communicated with the equipment 700 to be hydrogenated, and the gas filling pipe 800 is provided with a fifth pressure sensor 810.
The invention is suitable for different pressure difference scenes, selects a first compressor 100 and a second compressor 200 with different power models, in a gas transfer scene, the gas is stored in a large storage device facing to very large air volume pressurization, and the initial pressure difference is small or the inherent pressure difference is small, for a compression pump with small difference of compression speed, the gas handling capacity under a single compression stroke is concerned, at the moment, the compressor or the compressor combination with small compression ratio and large single handling capacity is selected to have higher efficiency, and the purposes of primarily boosting gas and handling large amount of gas are achieved preferentially, so that the first valve 11, the first compressor 100 and the fourth valve 41 are firstly opened to charge the second storage tank 400, the first compressor 100 completes large amount of gas transfer and primary boosting, then the second compressor 200 and the eighth valve 81 can be opened, and then the second compressor 200 pressurizes the gas in the second storage tank 400 to the third storage tank 500, the remaining 1 or more tube bundle vehicles 600 which are not used up under 6MPa are pulled away, the third valve 31 is opened, the remaining gas is transferred from the tube bundle vehicles 600 to the first storage tank 300 which is empty in the station or at low pressure through the first compressor 100, the gas handling capacity is large in the transfer process, the generated pressure difference is small, the first compressor 100 with large gas handling capacity is selected correspondingly, the pressure of the tube bundle vehicles 600 is pumped to 1MPa or the related specified requirements, and the empty vehicles are pulled back, so that the working pressure span of the first compressor 100 and the second compressor 200 is reduced, the supercharging pressure difference is reduced, meanwhile, the pressure range of an inlet and an outlet is correspondingly reduced, more time is spent in a relatively stable working condition, the service life of equipment is prolonged, the fault maintenance is reduced, and the cost is reduced.
When the equipment to be inflated is inflated with hydrogen, a proper inflation way is selected according to the required pressure of the equipment to be inflated, the working pressure span of the second compressor 200 is reduced, the supercharging pressure difference is reduced, meanwhile, the pressure range of an inlet and an outlet is correspondingly reduced, the equipment can operate under a relatively stable working condition for more time, the service life of the equipment is prolonged, the fault maintenance is reduced, and the cost is reduced.
The hydrogen station may further include a controller 900, the first valve 11, the second valve 21, the third valve 31, the fourth valve 41, the fifth valve 51, the sixth valve 61, the seventh valve 71, the eighth valve 81, the ninth valve 91, and the tenth valve 101 are solenoid valves, the controller 900 is electrically connected to the first valve 11, the second valve 21, the third valve 31, the fourth valve 41, the fifth valve 51, the sixth valve 61, the seventh valve 71, the eighth valve 81, the ninth valve 91, the tenth valve 101, the first pressure sensor 12, the second pressure sensor 310, the third pressure sensor 410, the fourth pressure sensor 510, the fifth pressure sensor 810, the first compressor 100, and the second compressor 200, the controller 900 controls the opening and closing of each valve according to the pressure values detected by the first pressure sensor 12, the second pressure sensor 310, the third pressure sensor 410, and the fourth pressure sensor 510.
The pressure of the tube bundle vehicle 600 before hydrogen transportation and hydrogen discharge can be 17-19Mpa, the set pressure range of the first storage tank 300 is 1-8Mpa, the set pressure range of the second storage tank 400 is 8-20Mpa, and the set pressure range of the third storage tank 500 is 20-45 Mpa.
For example: a tube bundle vehicle 600 loaded with 18MPa gas is sent to a hydrogen station, at the moment, if no hydrogenation vehicle carries out hydrogenation before, the controller 900 opens the first valve 11, the first compressor 100 and the fourth valve 41, the gas of the tube bundle vehicle 600 is transferred and pressurized to the set pressure range of 8-20MPa of the second storage tank 400 through the first compressor 100, the second storage tank 400 is provided with a third pressure sensor 410, and when the first pressure sensor 12 monitors the pressure P at the gas inlet end of the first compressor 1000When the pressure is less than 8MPa, the controller 900 controls the fourth valve 41 to be closed, opens the third valve 31, stops pressurizing the second storage tank 400, switches to transfer the set pressure range 1-8MPa of the pressurized gas storage tank 1 to the first storage tank 300, and stops taking the gas from the tube bundle vehicle 600 to be ready for being dragged when the first pressure sensor 12 detects that the pressure at the gas inlet end of the first compressor 100 is less than 1MPa, or detects that the pressure P in the first storage tank 300 is detected by the second pressure sensor 3101When the pressure is 8MPa, the controller 900 closes the first valve 11, the first compressor 100, and the third valve 31, and stops pressurizing the first accumulator 300.
When the pressure of the tube bundle vehicle 600 is more than 8MPa, the first compressor 100 pressurizes the second storage tank 400; when the pressure of the tube bundle vehicle 600 is 1-8MPa, the first compressor 100 pressurizes the first storage tank 300.
At the same time, the controller 900 controls the second compressor 200, the fifth valve 51 and the eighth valve 81 to open, the second compressor 200 takes gas from the second storage tank 400, the set pressure of the booster storage tank 3 is transferred to the third storage tank 500 to be 20-45MPa, and the fourth pressure sensor 510 detects the pressure P in the third storage tank 5003If= 45MPa, the controller 900 closes the fifth valve 51, the second compressor 200, and the eighth valve 81; the pressure P in the second tank 400 is detected at the third pressure sensor 4102When the pressure is less than or equal to 8MPa, the controller 900 preferentially starts the first compressor 100, opens the first valve 11 and the third valve 31, preferentially takes gas from the pipe bundle vehicle 600 to pressurize the second storage tank 400, and when the condition is not triggered, switches to close the first valve 11 and open the second valve 21, and takes gas from the first storage tank 300 to pressurize the second storage tank 400.
Pressure, i.e., P, of the tube bundle vehicle 600 and the first storage tank 3000、P1When the pressure is less than 1MPa, the controller 900 controls the first compressor 100 to carry out interlocking shutdown protection; pressure P of the second tank 4002When the pressure is more than or equal to 20MPa, the controller 900 controls the first compressor 100 to be shut down in an interlocking manner; pressure value P of tube bundle vehicle 6000Less than 8MPa, P when the first compressor 100 takes gas from the first storage tank 300 and pressurizes the second storage tank 4001When the minimum preset pressure value is reached, P2When the maximum preset pressure value is reached, the controller 900 controls the first compressor 100 to be interlockingly stopped.
In a method for operating a hydrogen station in which a dual compression system as described above is operated, pressures detected by the first pressure sensor 12, the second pressure sensor 310, the third pressure sensor 410, the fourth pressure sensor 510, and the fifth pressure sensor 810 are respectively denoted by P0，P1，P2、P3And P4。
The gas storage processes of the first, second and third storage tanks 300, 400 and 500 are as follows:
the first valve 11 and the fourth valve 41 are opened to operate the first compressor 100, and the tube bundle cart 60 is assembledTransferring the hydrogen gas in the second storage tank 400 to the second storage tank 400, opening the fifth valve 51 and the eighth valve 81, operating the second compressor 200, transferring the hydrogen gas in the second storage tank 400 to the third storage tank 500, when P is3When the maximum preset pressure value of the third storage tank is reached, the operation of the second compressor 200 is stopped, and the fifth valve 51 and the eighth valve 81 are closed.
When P is present2Reaches the maximum set pressure value, P, of the second tank 4000And not less than the minimum set pressure value of the second accumulator 400, the operation of the first compressor 100 is stopped, and the first valve 11 and the fourth valve 41 are closed.
When P is present2Reaches the maximum set pressure value, P, of the second tank 4000When the pressure value is less than the minimum set pressure value of the second storage tank 400, the fourth valve 41 is closed, the third valve 31 is opened, the first compressor 100 continues to operate, the hydrogen in the tube bundle vehicle 600 is transferred and pressurized to the first storage tank 300, and when P is less than the minimum set pressure value of the second storage tank 400, the hydrogen is transferred and pressurized to the first storage tank 3001When the maximum preset pressure value of the first tank is reached, the operation of the first compressor 100 is stopped.
The hydrogenation process of the equipment 700 to be hydrogenated is as follows: the pressure required by the equipment 700 to be hydrogenated is recorded as P, and the pressure P detected by the fifth pressure sensor4The pressure inside the device 700 to be hydrogenated;
(1) when P < P2
At an initial pressure of the plant 700 to be hydrogenated of less than P2When the difference is more than 2MPa, the fifth valve 51 and the sixth valve 61 are opened, the second storage tank 400 hydrogenates the equipment 700 to be hydrogenated, and P is monitored2And P4When the difference is less than or equal to 2MPa, closing the fifth valve 51 and the sixth valve 61, simultaneously opening the ninth valve 91, and filling the equipment to be hydrogenated 700 by the third storage tank 500; p4When the required pressure P of the equipment 700 to be hydrogenated is reached, the ninth valve 91 is closed, and the hydrogenation is finished;
(2) when P is present3≥P≥P2And P is3The difference value of the pressure difference value and the P is more than or equal to 2MPa
(2.1) the initial pressure of the plant 700 to be hydrogenated is less than P2When the difference is more than 2MPa, the operation process is the same as that of the step (1);
(2.2) the initial pressure of the plant 700 to be hydrogenated is greater than P2When the hydrogenation equipment 700 is needed to be added with hydrogen, the ninth valve 91 is opened, and the third storage tank 500 is filled with the hydrogen to be added; p4When the required pressure P of the equipment 700 to be hydrogenated is reached, the ninth valve 91 is closed, and the hydrogenation is finished;
(3) when P is present3≥P≥P2And P is3The difference value with P is less than 2MPa
(3.1) the initial pressure of the plant 700 to be hydrogenated is less than P2When the difference is more than 2MPa, the fifth valve 51 and the sixth valve 61 are opened, the second storage tank 400 hydrogenates the equipment 700 to be hydrogenated, and P is monitored2And P4When the difference is less than or equal to 2MPa, the fifth valve 51 and the sixth valve 61 are closed, the ninth valve 91 is opened at the same time, the third storage tank 500 is used for filling the equipment 700 to be hydrogenated, and P is monitored3And P4When the difference is less than or equal to 2MPa, closing the ninth valve, opening the seventh valve 71, the second compressor 200 and the tenth valve 101, filling the equipment 700 to be hydrogenated by the third storage tank 500 through the second compressor, and when the fifth pressure sensor 810 monitors that the required pressure P is reached, closing the seventh valve 71 and the tenth valve 101, and ending the hydrogenation;
(3.2) the initial pressure of the plant 700 to be hydrogenated is greater than P2When the ninth valve 91 is opened, the third storage tank 500 is used for filling the equipment 700 to be hydrogenated with P4When the required pressure P of the equipment 700 to be hydrogenated is reached, the ninth valve 91 is closed, and the hydrogenation is finished; upon detection of P3And P4When the difference is less than or equal to 2MPa, closing the ninth valve, opening the seventh valve 71, the second compressor 200 and the tenth valve 101, filling the equipment 700 to be hydrogenated by the third storage tank 500 through the second compressor, and when the fifth pressure sensor 810 monitors that the required pressure P is reached, closing the seventh valve 71 and the tenth valve 101, and ending the hydrogenation;
in the above two cases, at the same time of the end of hydrogenation, the eighth valve 81 and the fifth valve 51 are opened, the second compressor 200 continues to operate, the hydrogen gas in the second storage tank 400 is pressurized and filled into the third storage tank 500, and when the third storage tank 500 reaches the maximum preset pressure value or the second storage tank 400 reaches the minimum preset pressure value, the second compressor 200 stops operating;
(4) when P is more than or equal to P3
(4.1) initial pressure at the plant 700 to be hydrogenated is less than P2The operation flow is the same as that of (3.1);
(4.2) initial pressure at the plant 700 to be hydrogenated is greater than P2Is not more than P3Meanwhile, the operation flow is the same as that in (3.2);
(4.3) initial pressure at the plant 700 to be hydrogenated is greater than P3When the pressure reaches the required pressure P, the fifth pressure sensor 810 monitors that the seventh valve 71 and the tenth valve 101 are closed, and the hydrogenation is finished;
in the above three cases, at the same time when the hydrogenation is finished, the eighth valve 81 and the fifth valve 51 are opened, the second compressor 200 continues to operate, the hydrogen gas in the second storage tank 400 is pressurized and filled into the third storage tank 500, and when the third storage tank 500 reaches the maximum preset pressure value or the second storage tank 400 reaches the minimum preset pressure value, the second compressor 200 stops operating.
After the hydrogenation is performed on the equipment 700 to be hydrogenated, the hydrogen in the second storage tank 400 is smaller than the minimum set pressure value; there is also a hydrogen gas balance in the tube bundle cart 600, and P0When the pressure value is larger than the minimum set pressure value of the second storage tank 400, the first valve 11 and the fourth valve 41 are opened firstly, and the first compressor 100 is operated to take gas from the tube bundle vehicle 600 and pressurize the second storage tank 400;
no hydrogen balance, or P, in the tube bundle vehicle 6000Not more than the minimum set pressure value of the second storage tank 400, the second valve 21, the first compressor 100 and the fourth valve 41 are opened, the first compressor 100 pressurizes and fills the hydrogen in the first storage tank 300 to the second storage tank 400, when P is2To the maximum preset pressure value, or P, of the second tank 4001When the minimum preset pressure value of the first storage tank 300 is reached, the operation of the first compressor 100 is stopped.
The operation method of the invention reduces the working pressure span of the first compressor 100 and the second compressor 200, reduces the supercharging pressure difference, simultaneously correspondingly reduces the pressure range of the inlet and the outlet, operates in a relatively stable working condition for more time, is more beneficial to prolonging the service life of equipment, reduces the fault maintenance and reduces the cost.
The above is not relevant and is applicable to the prior art.
While certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing is illustrative only and is not limiting of the scope of the invention, as various modifications or additions may be made to the specific embodiments described and substituted in a similar manner by those skilled in the art without departing from the scope of the invention as defined in the appending claims. It should be understood by those skilled in the art that any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention are included in the scope of the present invention.

Claims (6)

1. A hydrogen station with dual compression system operation, characterized by: the system comprises a first compressor (100), a second compressor (200), a first storage tank (300), a second storage tank (400) and a third storage tank (500), wherein the minimum set pressure value of the third storage tank (500) is not less than the maximum set pressure of the second storage tank (400), and the minimum set pressure of the second storage tank (400) is not less than the maximum set pressure of the first storage tank (300);
the tube bundle vehicle (600) is communicated with the air inlet end of the first compressor (100) through a first pipeline (1), and a first valve (11) and a first pressure sensor (12) are arranged on the first pipeline (1);
the first storage tank (300) is communicated with the air inlet end of the first compressor (100) through a second pipeline (2), and a second valve (21) is arranged on the second pipeline (2);
the first storage tank (300) is communicated with the air outlet end of the first compressor (100) through a third pipeline (3), and a third valve (31) is arranged on the third pipeline (3);
the second storage tank (400) is communicated with the air outlet end of the first compressor (100) through a fourth pipeline (4), and a fourth valve (41) is arranged on the fourth pipeline (4);
the second storage tank (400) is communicated with the air inlet end of the second compressor (200) through a fifth pipeline (5), and a fifth valve (51) is arranged on the fifth pipeline (5);
the second storage tank (400) is communicated with equipment (700) to be hydrogenated through a sixth pipeline (6), and a sixth valve (61) is arranged on the sixth pipeline (6);
the third storage tank (500) is communicated with the air inlet end of the second compressor (200) through a seventh pipeline (7), and a seventh valve (71) is arranged on the seventh pipeline (7);
the third storage tank (500) is communicated with the air outlet end of the second compressor (200) through an eighth pipeline (8), and an eighth valve (81) is arranged on the eighth pipeline (8);
the third storage tank (500) is communicated with the gas outlet end of the equipment (700) to be hydrogenated through a ninth pipeline (9), and a ninth valve (91) is arranged on the ninth pipeline (9);
the device (700) to be hydrogenated is communicated with the gas outlet end of the second compressor (200) through a tenth pipeline (10), and a tenth valve (101) is arranged on the tenth pipeline (10);
a second pressure sensor (310) is arranged on the first storage tank (300), a third pressure sensor (410) is arranged on the second storage tank (400), and a fourth pressure sensor (510) is arranged on the third storage tank (500);
the gas outlet ends of the sixth pipeline (6), the ninth pipeline (9) and the tenth pipeline (10) are all connected with the gas inlet end of a gas filling pipe (800) in parallel, the gas outlet end of the gas filling pipe (800) is detachably communicated with the equipment (700) to be hydrogenated, and a fifth pressure sensor (810) is arranged on the gas filling pipe (800).
2. A hydrogen station with a dual compression system operating as set forth in claim 1, characterized in that: the hydrogen station also comprises a controller (900), the first valve (11), the second valve (21), the third valve (31), the fourth valve (41), the fifth valve (51), the sixth valve (61), the seventh valve (71), the eighth valve (81), the ninth valve (91) and the tenth valve (101) are all electromagnetic valves, the controller (900) is electrically connected with the first valve (11), the second valve (21), the third valve (31), the fourth valve (41), the fifth valve (51), the sixth valve (61), the seventh valve (71), the eighth valve (81), the ninth valve (91), the tenth valve (101), the first pressure sensor (12), the second pressure sensor (310), the third pressure sensor (410), the fourth pressure sensor (510), the fifth pressure sensor (810), the first compressor (100) and the second compressor (200).
3. A hydrogen station with a dual compression system operating as claimed in claim 1 or 2, characterized in that: the pressure of the tube bundle vehicle (600) before hydrogen transportation and hydrogen unloading is 17-19Mpa, the set pressure range of the first storage tank (300) is 1-8Mpa, the set pressure range of the second storage tank (400) is 8-20Mpa, and the set pressure range of the third storage tank (500) is 20-45 Mpa.
4. A method of operating a hydrogen station in which a dual compression system is operated according to any one of claims 1 to 3, characterized in that: the pressure detected by the first pressure sensor (12), the second pressure sensor (310), the third pressure sensor (410), the fourth pressure sensor (510) and the fifth pressure sensor (810) is respectively marked as P0，P1，P2、P3And P4；
The gas storage processes of the first storage tank (300), the second storage tank (400) and the third storage tank (500) are as follows:
firstly opening a first valve (11) and a fourth valve (41), operating a first compressor (100), transferring and pressurizing hydrogen in a pipe bundle vehicle (600) to a second storage tank (400), then opening a fifth valve (51) and an eighth valve (81), operating a second compressor (200), transferring and pressurizing hydrogen in the second storage tank (400) to a third storage tank (500), and when P is reached3When the maximum preset pressure value of the third storage tank (500) is reached, stopping running the second compressor (200), and closing the fifth valve (51) and the eighth valve (81);
when P is present2Reaching a maximum set pressure value, P, of the second tank (400)0When the pressure value is not less than the minimum set pressure value of the second storage tank (400), stopping operating the first compressor (100), and closing the first valve (11) and the fourth valve (41);
when P is present2Reaching a maximum set pressure value, P, of the second tank (400)0When the pressure value is less than the minimum set pressure value of the second storage tank (400), the fourth valve (41) is closed, the third valve (31) is opened, the first compressor (100) continues to operate, hydrogen in the tube bundle vehicle (600) is transferred and pressurized to the first storage tank (300), and when P is less than the minimum set pressure value of the second storage tank (400), the hydrogen is pressurized to the first storage tank (300)1When the maximum preset pressure value of the first tank is reached, the first compressor (100) is stopped.
5. The method of operating a hydrogen station in which a dual compression system is operated according to claim 4, wherein: the hydrogenation flow of the equipment (700) to be hydrogenated is as follows: the pressure required by the equipment (700) to be hydrogenated is recorded as P, and the pressure P detected by the fifth pressure sensor4The gas pressure inside the equipment (700) to be hydrogenated;
when P < P2
At an initial pressure of the apparatus (700) to be hydrogenated of less than P2When the difference is more than 2MPa, the fifth valve (51) and the sixth valve (61) are opened, the second storage tank (400) hydrogenates the equipment (700) to be hydrogenated, and P is monitored2And P4When the difference is less than or equal to 2MPa, closing the fifth valve (51) and the sixth valve (61), simultaneously opening the ninth valve (91), and filling the equipment (700) to be hydrogenated by the third storage tank (500); p4When the required pressure P of the equipment (700) to be hydrogenated is reached, the ninth valve (91) is closed, and the hydrogenation is finished;
when P is present3≥P≥P2And P is3The difference value of the pressure difference value and the P is more than or equal to 2MPa
(2.1) the initial pressure of the apparatus (700) to be hydrogenated is less than P2When the difference is more than 2MPa, the operation process is the same as that of the step (1);
(2.2) the initial pressure of the apparatus (700) to be hydrogenated is greater than P2When the hydrogenation equipment is used, the ninth valve (91) is opened, and the equipment to be hydrogenated (700) is filled from the third storage tank (500); p4When the required pressure P of the equipment (700) to be hydrogenated is reached, the ninth valve (91) is closed, and the hydrogenation is finished;
when P is present3≥P≥P2And P is3The difference value with P is less than 2MPa
(3.1) the initial pressure of the apparatus (700) to be hydrogenated is less than P2When the difference is more than 2MPa, the fifth valve (51) and the sixth valve (61) are opened, the second storage tank (400) hydrogenates the equipment (700) to be hydrogenated, and P is monitored2And P4When the difference is less than or equal to 2MPa, closing the fifth valve (51) and the sixth valve (61), simultaneously opening the ninth valve (91), filling the equipment (700) to be hydrogenated by the third storage tank (500), and monitoring P3And P4When the difference is less than or equal to 2MPa, closing the ninth valve, opening the seventh valve (71), the second compressor (200) and the tenth valve (101), filling the equipment (700) to be hydrogenated by the third storage tank (500) through the second compressor, and closing the seventh valve (71) and the tenth valve (101) when the fifth pressure sensor (810) monitors that the required pressure P is reached, so that the hydrogenation is finished;
(3.2) the initial pressure of the apparatus (700) to be hydrogenated is greater than P2When the hydrogen is added, the ninth valve (91) is opened, the equipment (700) to be hydrogenated is filled by the third storage tank (500), and P4When the required pressure P of the equipment (700) to be hydrogenated is reached, the ninth valve (91) is closed, and the hydrogenation is finished; upon detection of P3And P4When the difference value is less than or equal to 2MPa, closing the ninth valve (91), opening the seventh valve (71), the second compressor (200) and the tenth valve (101), filling the equipment (700) to be hydrogenated by the third storage tank (500) through the second compressor (200), and closing the seventh valve (71) and the tenth valve (101) when the fifth pressure sensor (810) monitors that the required pressure P is reached, so that the hydrogenation is finished;
in the two cases, the eighth valve (81) and the fifth valve (51) are opened at the same time when the hydrogenation is finished, the second compressor (200) continues to work, the hydrogen in the second storage tank (400) is pressurized and filled into the third storage tank (500), and when the third storage tank (500) reaches the maximum preset pressure value or the second storage tank (400) reaches the minimum preset pressure value, the second compressor (200) stops working;
when P is more than or equal to P3
(4.1) an initial pressure in the apparatus (700) to be hydrogenated of less than P2The operation flow is the same as that of (3.1);
(4.2) initial pressure in the apparatus (700) to be hydrogenated is greater than P2Is not more than P3Meanwhile, the operation flow is the same as that in (3.2);
(4.3) initial pressure in the apparatus (700) to be hydrogenated is greater than P3When the hydrogenation process is finished, the seventh valve (71), the second compressor (200) and the tenth valve (101) are opened, the third storage tank (500) fills the equipment (700) to be hydrogenated through the second compressor (200), the fifth pressure sensor (810) monitors that the required pressure P is reached, the seventh valve (71) and the tenth valve (101) are closed, and the hydrogenation process is finished;
in the three cases, the eighth valve (81) and the fifth valve (51) are opened at the same time when the hydrogenation is finished, the second compressor (200) continues to work, the hydrogen in the second storage tank (400) is pressurized and filled into the third storage tank (500), and when the third storage tank (500) reaches the maximum preset pressure value or the second storage tank (400) reaches the minimum preset pressure value, the second compressor (200) stops working.
6. The method of operating a hydrogen station in which a dual compression system is operated according to claim 5, wherein: after hydrogenation is carried out on the equipment (700) to be hydrogenated, the hydrogen in the second storage tank (400) is less than the minimum set pressure value;
the hydrogen gas balance is also arranged in the tube bundle vehicle (600), and P0The pressure value is larger than the minimum set pressure value of the second storage tank (400), the first valve (11) and the fourth valve (41) are firstly opened, and the first storage tank is operatedThe compressor (100) takes gas from the pipe bundle vehicle (600) and pressurizes the gas to the second storage tank (400);
no hydrogen balance, or P, in the tube bundle vehicle (600)0Not more than the minimum set pressure value of the second storage tank (400), the second valve (21), the first compressor (100) and the fourth valve (41) are opened, the first compressor (100) pressurizes and fills the hydrogen in the first storage tank (300) to the second storage tank (400), and when P is monitored2Reaching a maximum preset pressure value of the second tank (400), or monitoring P1When the minimum preset pressure value of the first storage tank (300) is reached, the operation of the first compressor (100) is stopped.
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KR102213908B1 (en) * 2020-10-28 2021-02-08 주식회사 삼정이엔씨 Hydrogen gas charging system with oil collecting fucntion
CN112283577A (en) * 2020-11-04 2021-01-29 太原理工大学 Vehicle-mounted high-pressure hydrogen grading filling system
CN112483888A (en) * 2020-12-25 2021-03-12 江苏国富氢能技术装备股份有限公司 Mixed supercharging multistage filling hydrogenation device
CN113154248A (en) * 2021-04-08 2021-07-23 上海氢枫能源技术有限公司 Sequence control system and sequence control method for hydrogenation station and hydrogenation station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114738665A (en) * 2022-04-24 2022-07-12 自贡东方通用压缩机有限公司 Vehicle hydrogen filling system and filling method
WO2024211112A1 (en) * 2023-04-03 2024-10-10 Hexagon Purus North America Holdings Inc. Multi-compressor refueling station

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